Title :
A Study of the Anomalous Field Evaporation of Sm(Co0.68Fe0.20Cu0.10Zr0.02)7.5 Alloy by 3D-Atom Probe
Author :
Xiong, X.Y. ; Finlayson, T.R.
Abstract :
In this work, 3D atom probe was done on Sm(Co0.68Fe0.20Cu0.10Zr0.02) 7.5 alloy. Results suggested that an anomalous field evaporation occurred in this alloy and that with decreasing temperature to about 20 K, the preferential evaporation of Sm could be prevented from occurring. The purpose of this study is to establish suitable probing conditions for atom probe analysis of this alloy, so that compositions for this and similar alloys can be determined correctly in our further investigations of the effects of heat treatment on alloy constitution and phase composition. The effects of probing conditions on the measured composition are discussed based oh the evaporation fields of metals
Keywords :
atom probe field ion microscopy; cobalt alloys; copper alloys; field evaporation; iron alloys; samarium alloys; zirconium alloys; 3D atom probe analysis; Sm(Co0.68Fe0.20Cu0.10Zr0.02 )7.5; anomalous field evaporation; atom probe field ion microscopy; heat treatment; metal evaporation fields; phase composition; probing conditions; Atomic measurements; Constitution; Detectors; Heat treatment; Microscopy; Probes; Pulse measurements; Temperature measurement; Tomography; Zirconium;
Conference_Titel :
Vacuum Nanoelectronics Conference, 2006 and the 2006 50th International Field Emission Symposium., IVNC/IFES 2006. Technical Digest. 19th International
Conference_Location :
Guilin
Print_ISBN :
1-4244-0401-0
DOI :
10.1109/IVNC.2006.335301
